Benjamin e



B.l R. JENKINS.

" Wash-Board.

No. 224,828. Paiented Feb. 24, 1880.

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NAEEI'EES. PHOTO-LITHDGRAPHER, WASMINGTON. D C.

\- UNITED STATES PATENT OFFICE.

BENJAMIN JENKINS, F GONKLINGVILLE, NEW YORK.

WASH-BOARD.v

SPECIFICATION forming part Of Letters Patent N0. 224,828, dated. February 24, 1880.

` Application led September 13. 1879.

To all whom it may concern.:

Be it known that 1, BENJAMIN R. JENKINS, of Conklingville, in ,the county of Saratoga and State of New York, have invented a Wash- Board, of which the following is a specification. Y

Myinvention `consists in forming continuous and unbroken ridges or elevations which are to receive the wear of the clothes in the operation of washingor rubbing, said ridges or elevations being arranged in a parallel or-l der andlongitudinally to the direction of the motion of-washing or rubbing, and at right angles, or nearly so, to the transverse ridges, elevations, orcorrugations, or alternate elevations and depressions of the sheet-metal washing-surface, the intervening `grooves or depressions between the longitudinal ridges being designed to serve the purposeof conduct'- Iing away the suds. These longitudinal ridges or `corrugations also serve to greatly stiften the 4nietal platein respect `to resistance to deflection.

Myinvention, therefore, chiey consists iu having both the longitudinal and transverse corrugations con tinuous and unbroken throughout their entire length.

To enable others skilledin the art to more fully understand and construct my invention, I will proceed to describe it, as follows:

Figure l is a vertical' elevation of my iu- Fig. 2 represents an edge View of f my sheet-metal wash-board plate.

Similar letters of reference indicate corresponding parts in all the figures.

A, Figs. l and 2, represents the` corrugated zinc or sheet-meta1 wash-board plate. It will be observed, by reference to Fig. 2, that the corrugations, both longitudinal and transverse, are continuous throughout their entire length, e e, Figs. l and 2, `representing the transverse corrugations, and f f the longitudinal ridges or corrugations. By this form of construction greater stiffness is securedV to the sheet-metal plate constituting the washingsurface, as Well as providing longitudinal channels or grooves to conduct the suds downward into the tub,

`The ridges f f may touch each other at their base, so that 'there will be no intervening plane, as is shown at e', Fig. 2, but having :an undulatugorzigzag conformation when viewed 1ongitudinally. This would, of course., deepen lthe corrugations, and thus impart additional stiffness to the metal plate, as will be readily understood.

My sheet-metal Wash-board plate may be corrugated by means of anyof the well-known devices used for corrugating or stamping metal BENJAMIN E. JENKINS.

Witnesses:

I. W. LATGHEE, E. GEORGE DUNKLEE. 

